| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 3791 |
86%
|
| 2 | Mild | 339 |
7.7%
|
| 3 | Moderate | 201 |
4.6%
|
| 4 | Severe | 63 |
1.4%
|
| 5 | Extreme | 14 |
0.3%
|
| Sysmiss | 9 |